It is important to distinguish between the use of codecs and the use of content produced by the codecs; and therefore it is important to note that any mp3 royalty fees are independent of which encoder is used to produce the mp3 file content. If royalty fees are due for a particular project or enterprise, they will be due irrespective of whether the Codec Toolbox is used or some alternative encoder is used.

There is no circumstance where using the Sonnox Fraunhofer Codec Toolbox will increase licence fees or require additional fees of any sort.